Lubricating-gland for stuffing-boxes.



B. H SMITH.

LUBRtCAHNG GLAND FOR STUFFING BOXES.

APPLICATlDN man M028. mus.

1 ,239, 1 3 2. Patented Sept. 4, 191?.

UNITED STATES PATENT OFFICE.

BERT H. SMITH, OF FAIBBUBY, NEBRASKA, ASSIGNOB TO WILLBERT MANUFACT'UR ING COMPANY, OF FAIRBURY, NEBRASKA, A CORPORATION.

$pecificatlon of Letters Patent.

Patented Sept. 4, 1917.

Application bled December 28, 1916. Serial No. 139,323.

To all whom it may concern Be it known that I, Bmrr H. S'Mrrn, a citizen of the United States, residing at Fairbury, in the county of Jefferson and State of Nebraska, have invented certain new and useful Im movements in Lubricating'Glunds for Stu ing-lloxes of which I do declare the following to be a full, clear, and exact description, reference being bad to the drawing accompanying this specification.

The presentinvention has for its object to provide a. simple and effective construe tion of gland whereby grease may be uniformly distributed over the surface of the piston rod, and the invention consists in the novel features of construction hereinafter described, illustrated in the uccompnnying drawing and particularly pointed. out in the claims at the end of this specification.

Figure 1 is a view in central lon itudinal section through it stuffing box embo ying my invention, the piston rod. being shown in elevation. Fig. 2 is a sectional view on line 2---2of Fig. 5:1. Fin; 3 is :1 view in section on line 1 -45 of Fig. 2. the attii-ohing lugs being shown in elevnticrii.

A de: ignntes; n etufilng box which is shown us projrcting from the cylinder head A. this stuiling box being: provided with a chamber B torrceive suitable packing and to reeeive, at its mite! end, a gland (3 whereby the packing is retained within the stulling From the end of the stulling box A project the threaded bolts 1) that pass throu h holes 0 of the ears of the gland C. these be ts 1) bein provided with correspondingly threade nuts E to retain the gland in position. Through the stu'iling box A and glund (1 passes the piston rod F or other rod to be lubricated.

My improved gland C is preferablyformed as o costing and has upon its interioran annular chamber 0' that extends from end to end of the gland, the chamber being formed by the well of the land and'by the inwardly projecting annuliir ribs 0' and c at its ends and by an inner wall or bush ing G that-is preferably formed of relatively soft metal, such as brass or other anti-friction metal, find separate from the gland C. The lower end oi the bushing G is formed with an outwardly projecting annular shoulder 9 that engages with the inwardly projeoitmg annular rib c at the lower end of the gland C.

The inner-face of the bushing G is formed I with the annular channels a and a and preferably also with the eonnectin channels c that are shown as diagonally 1 used and curved, as is best indicated in ig. 2 of the drawing; and through the bushing at various points around the annular channels 0 and c are formed the holes a to admit lubricant through the bushing G from the chamber r" of the gland. As shown, the gland G has formed integral therewith a. grease mp ll the interior wall of which is screw threaded to receive a threaded plug H whereby the grease may be forced from the eluunber G through a. hole g into the annular chamber 0' of the gland, whence it will pass by the holes a to the distributing grooves upon the inner face of the bushing G. The plug H maybe formed with a socket h to receive a suitable tool whereby the plug may be turned from time to time to force the grease from the cup G into the gland.

From the foregoing description it will be seen that when my improved gland has been placed in position for use, reuse may be forced from the reuse cup .l' into the annular chamber 0 o the gland and through the bushing G to the piston rod F and the arrangement of the distributing grooves upon the inner face of the bushing G will insure a uniform distribution of the grease upon the surface of the rod F. The die nal arrangement of the groove 0 of the ushing. and as well the annular grooves a and c, insure that n film of grease is constantly delivered around the entire peripher of the rod F. Inasmuch as the bushing is rebeing re- .6 movable, it can be readily renewed when I wish it distinctly understood that while I have described what I regard as {the preierred embodiment of my invention, the details of construction above set out ma be varied without departing from the sp ir t of the invention and features of the invention may be employed without its adoption as an entire y.

Having thus described my invention, what claim as new and desire to secure by Letters Patent is- 1. The combination with astufling box, of a lubricating gland extending within the outer portion of said stalling box for boldin packing in place about the rod to be In located, said. gland having an annular chamber therein extending substantially fiq'om end to end thereof, the inner wall of said chamber being erforated to permit the passage of grease t icrcthrou gh and having its inner face provided'with grooves for distributing the grease from end to end of said gland. said gland having a grease cup at its outer end and a. screw plug in said grease cup for forcing grease into said chamber and through said perforations into said grooves.

2. A lubricating gland adapted to fit within the outer portion of a smiling box for -holding packing in place about the rod to be lubricated, said gland having an interior annular chamber extending subslantialiy from end to end thereof, a bushing inter locked with and adapted to be held in plac by said land, said bushing forming the inner wal of said chamber and having perforations therein for the passage of lubri cant and also having lubricant distributing grooves on its inner face, said gland having means for forcing grease from said chamber and through said perforations into said grooves.

3. A lubricating gland. comprising a casting having an Interior annular chamber extending substantially from end to end thereof, a removable bushing forming the inner wall of said chamber and extending from end to end of said gland,-said bushing having holes therein to permit lubricant to pass from the chamber of the gland to thebody to be lubricated, the bnshingbein interlOnlfl-d with said gland to hold said ushing against outward movement while leaving it free to be withdrawn from the inner end of the gland.

4. A lubricating gland comprising a casting having an interior annular chamber extending substantiallyfrom end to end there of and provided at its opposite ends with of a cylin inwardly projecting annular ribs and an interior bushing of anti-friction metal forming the inner wall of-said gland, said bushing exterding from end to end of the gland and ms; is of and engagingA said annular ribs and being provided wit holes to permit the assage through the bushing of lubricant rom said chamber,

5. A lubricating gland having its exterior surface sha ed to fit within the stufling box d r head and having an interior annular chamber extending substantially from end to end thereof, the inner wall of said chamber being erforated to permit the passage of grease t erethrough and having its inner face provided with distributing grooves at its opposite ends and with intermediate .groovee connecting said distributing grooves.

6. A lubricating gland hav ing an interior annular chamber provided at its inner end with an inwardly projectin rib, and a perforfeited bushing forming t e inner wall of saidchamber, said bushing being provided at its inner end. with an outwardly projecting rib or shrgulder to interlock with the inner end of s gland, said rib or shoulder engaging the outside of the projecting rib of the gland to permit the bushing to be withdrawn from the inner end of said land.

7. The combination with a stu ng box, of igland having its exterior shaped to set wit, in the bore of the stuffing box, said gland being provided with an interior cham- 7 her extending substantially from end to end thereof, a lubricant receptacle connecting with said chamber, and a bushing extending from end to end. of said gland and formsaid gland and being removable therewith when said gland is withdrawn from the stuffing box.

8. A lubricating gland having its exterior surface shaped to set within the stuffing box of a cylinder head, said gland being provided at its outer end with laterally projetting lugs to receive attaching'bolts," the interior f said gland being formed with an annular grease chamber, a bushing extending from end to end of said gland and having perforations for the passage of Inbricant from said chamber to the rod to be lubricated, said gland being provided at its outer end with a grease cup for delivering grease to said chamber.

BERT H. SMITH. 

